AISI 4140 Hot-Rolled Alloy Steel Coil from China

Hot-rolled bars and rods of AISI 4140 chromium-molybdenum alloy steel, wound in irregularly shaped coils, used for manufacturing shafts and gears. Classified under HTS 7227.90.60.90 as other hot-rolled alloy steel bars/rods in coils, not matching specific alloy steel categories like high-strength or tool steel. Meets Chapter 72 definition for alloy steel with chromium and molybdenum content.

Duty Rate — China → United States

35%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter

Import Tips

Provide mill test certificates confirming alloy composition (e.g

0.38-0.43% C, 0.8-1.1% Cr, 0.15-0.25% Mo) to avoid reclassification

Ensure product is in irregularly wound coils and hot-rolled; uncoiled or cold-rolled shifts to different subheadings

Declare exact diameter and coil weight to match statistical reporting; common pitfall is misstating as concrete reinforcing bars